The old formula white hobnail milk glass 5" flat tumbler. Hold it up to the light and you see the red-orange "fire" in it. #3945 tumbler, 3 1/2" Tall, 2 1/2" diameter. 12 rows of hobs. Made by the Fenton Art Glass Company of Williamstown, West Virginia from 1952 to 1967. A scarce tumbler in the early milk glass hobnail pattern. 8 pieces available.